Spot carbon form sheet pack



Allg. l?? 1943, WL PQTTER Zgghl SPOT CARBON FORM SHEET PAGE Filed Sapt.g5, 1942 E Z :1:0015 I INVENTOR ATORNEYS Patented Aug. 17, 1943 SPOTCARBON FORM SHEET PACK y Charles Potter,l Waltham, Mass., assignor toAtlantic Register` Company, Waltham, Mass., a corporation @MassachusettsS Application rllhis invention relates 'to`a`pack of form sheets ofcombined record and transfer character and has'ior its object anarrangement of improved utility and economy of manufacture of saidpacks."

A coinbined'record andtransfer sheet has'upon one face a printed formwith blank spaces to be lled in and `has applied to Athe Opposite facecorresponding to said blank spaces, spot coatings of carbon transfer inkwhereby any filled in entries upon the upper face may be transferred incarbon copy form to a second sheet underlying the same. Theserecord-transfer sheets are relatively thin and somewhat translucent.However, they usually have suticient weight and sizing to preventordinary printing from showing through, but they are generally notsuiciently Opaque to prevent the darkened spot carbon applications fromshowing through the translucency of the sheet. One of the objects of thepresent invention is to eliminate this showing through of the carbonspots without making the sheet unduly expensive and heavy in weight.

The pack is conveniently formed from a strip of several form sheetsjoined by lines of weakness and a further object of the invention istoprovide a folded pack whereby the underlying sheets willV be in properrelation to receive thev vform sheets, here shown as four in number;

Fig. 2 is an under side view of the same strip;

Fig. 3 is a View showing one manner of Yfolding the strip in accordancewith the invention;

Fig. 4 is a View showing another manner of folding said strip inaccordance with the inven# tion: and

5 is a sectional view along line --S Fig. 2 to show superposed coatingsvon the transfer side of the sheet.

t will be understood that the thickness of the sheets and coatings aregreatly exaggerated in the views for the purposes of illustration.v

Referring particularly to the drawing, the strip as a whole is indicatedat 5 and is made up of several form sheets, four in number, L2, and 4.However, the number of sheets making up ofV sptemberzs, 1era-serial no.459,39?t

loiaim. (C1. 28s- 12) thestripv islnot important. VThe lines of weaknessjoiningy the adjacent sheets'are indicated at (iv and along these linesthe sheets may `eventually be separated from one-another.

As shown in Fig.. l, the lower'most sheet i which is intended to be theuppermost sheet of the pack whenV folded, has --printed thereon anydesired iorrn with certainV blank spacesl l, 8,. a`nd.9,-

adapted to be'iiiled in in accordance with the use of the form. yIn Fig.2` the vreversesides of the sheets of Fig'iare indicatedas |22', 3', and4f, respectively. The under side l' of sheet i for instance is blankexcept for certain restricted areas thereof indicated at .'i, S', 'and9', which areas correspond 'approximately to the blank areas l, 8, and 8of the upper face of said sheet.

Theareas 1', 8', and 9 are treated with spot carbon applications of anysuitable carbon ink which will transfer in the usual manner, anyimpression made on the corresponding upper side of said sheet. However,before said spot carbon transfer ink applications are made to the areasv aforesaid, these areas first have applied thereto carbon transfer inkIl.

a coating of color material, preferably of the same tint as the body Ofthe sheet to which it is applied andbeing of suicient body to rendersaid areas substantially opaque or at least more opaque than the balanceof the sheet.

v The purpose of these colorcoats in the aforesaid restricted areas 1',8', and A9' is to furnish a background 0r base body for the carbontransfer ink later applied thereto, and particularly so that .saiddarkened spots of carbon ink will not show through the body of the sheetl and be apparent from its upper side in the areas 1, t, and 9. The

superposed 'applications of the color coat and carbon transfer ink areshown in Fig, 5 wherein said color background is indicated at lil andthe It will be understood that in this view the sections of the saidcoating are greatly exaggerated and that on the actual sheet there willbe no apparent difference in thickness of the sheet at the places wherethese superposed coatings are applied. The color application I0 may beof any suitable paper coating of non-transferable material, for instancea white ink may be used on white paper. The method of applying the coatl0 as well as the carbon transfer ink Il may be by suitable successiveprinting operations.

The remaining sheets. of the` strip, viz. 2, 3, and 4, will likewisehave printed thereon the forms similar to that on sheet I although theremight be slight changes in said forms in accordance with the use of thesame. Due to the manner of namely sheet 2 in Fig. 1. This sheet on itsupper, side (as seen in Fig. 1) is to be left entirely blankA because inthe four sheet pack shown' there are no sheets beneath it to receive thetransfer impressions.

Fig. 3 shows one manner of folding a strip. of

Y four sheets into a pack in order to bring the sheet I to uppermostposition andsheet 2'to' the lowermost position. In this form of the packthe entire strip is folded once in its middle and thentherfoldedportions'are. againy foldedv in the middle, the: folds: takingplace f alongthe weakeninglines. In order-to have. the folded2 pack lieas flat as possible it is'alsordesirable` that thesheets I; 2; 3, and l'shall beef-.very slightly reduced areasuccessively. y

Fig; 4 shows anotherY manner of, folding.- the packfrom a stripof. four.sheets'.- In this form of; pack also it. will bezobserved that sheetr IVis uppermost and sheetZ is. lowermost. The advantageof both these Ways`of folding a sheet into its pack is that a single embracing fold,indicated at I2 in Fig. 3 and at I3 in Fig. 4, is prey. sented as theleading edge of the pack for being led into the typewriter when thefolded pack is introduced forl being typed. This arrangement makes thefolded pack substantially equivalent to a single sheet With respect toits convenience in being so introduced into the typewriter. In theusual. form of pack when several edges` are presented as the leadingedges for being introduced into the typewriter they are apt to cause adisarrangement of the sheets and imperfect registration of the carbonspots with the blanks to be lled in. This difficulty is avoided byhaving the pack with a single folded leading edge.

" `WhatIclaimis:

A vpack ofv form record sheets in superposed relation, each'l sheethaving upon its upper face a, printed form with one .or more blankspaces to be filled in, and each of `said sheets except the bottomysheet of the pack having a spot application iny arestrictedspace orspaces to correspond to-said blank space or spaces of its upper face,first a color'coat ofthe same tint as the body of the sheet and ofnon-transferable materialv to render said' space or spaceslsubstantially opaque in contrast tothe balance of the sheet` and thensuperposed upon said color coat. a coating'of transfer ink.

CHARLES. W. POTTER.

